UV induced reversible chain extension of 1-(2-anthryl)-1-phenylethylene functionalized polyisobutylene
The synthesis of novel 1-(2-anthryl)-1-phenylethylene (APE) di-telechelic polyisobutylenes is described. Utilization of a difunctional cationic initiator and the in situ addition of the non-homopolymerizable APE lead to the formation of di-anthryl telechelic polyisobutylenes. Products were character...
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Online Access: | http://dx.doi.org/10.1080/15685551.2017.1382028 |
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doaj-c99db75b23f24526ba175fc4326264a32020-11-25T01:44:42ZengTaylor & Francis GroupDesigned Monomers and Polymers1568-55512017-01-0120151452310.1080/15685551.2017.13820281382028UV induced reversible chain extension of 1-(2-anthryl)-1-phenylethylene functionalized polyisobutyleneCimen Ozguc Onal0Turgut Nugay1Bogazici UniversityBogazici UniversityThe synthesis of novel 1-(2-anthryl)-1-phenylethylene (APE) di-telechelic polyisobutylenes is described. Utilization of a difunctional cationic initiator and the in situ addition of the non-homopolymerizable APE lead to the formation of di-anthryl telechelic polyisobutylenes. Products were characterized by 1H NMR spectroscopy and Size Exclusion Chromatography. The polymers were UV irradiated at 365 and 254 nm and the reversible photocycloaddition of anthryl moieties was investigated. The chain extension of di-anthryl telechelic PIBs through photocoupling at 365 nm produced higher molecular weight products from low molecular weight precursors. The effect of precursor polymer concentration on the degree of chain extension was investigated, and intermolecular interactions leading to the formation of tetramers was observed. The photocoupled products were UV irradiated at 254 nm to induce the reversal of photocycloaddition of anthryl groups and to follow the consequent photoscission of polymers.http://dx.doi.org/10.1080/15685551.2017.1382028Anthracenephotochemistryreversible chain-extensionpolyisobutylenecationic polymerization |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Cimen Ozguc Onal Turgut Nugay |
spellingShingle |
Cimen Ozguc Onal Turgut Nugay UV induced reversible chain extension of 1-(2-anthryl)-1-phenylethylene functionalized polyisobutylene Designed Monomers and Polymers Anthracene photochemistry reversible chain-extension polyisobutylene cationic polymerization |
author_facet |
Cimen Ozguc Onal Turgut Nugay |
author_sort |
Cimen Ozguc Onal |
title |
UV induced reversible chain extension of 1-(2-anthryl)-1-phenylethylene functionalized polyisobutylene |
title_short |
UV induced reversible chain extension of 1-(2-anthryl)-1-phenylethylene functionalized polyisobutylene |
title_full |
UV induced reversible chain extension of 1-(2-anthryl)-1-phenylethylene functionalized polyisobutylene |
title_fullStr |
UV induced reversible chain extension of 1-(2-anthryl)-1-phenylethylene functionalized polyisobutylene |
title_full_unstemmed |
UV induced reversible chain extension of 1-(2-anthryl)-1-phenylethylene functionalized polyisobutylene |
title_sort |
uv induced reversible chain extension of 1-(2-anthryl)-1-phenylethylene functionalized polyisobutylene |
publisher |
Taylor & Francis Group |
series |
Designed Monomers and Polymers |
issn |
1568-5551 |
publishDate |
2017-01-01 |
description |
The synthesis of novel 1-(2-anthryl)-1-phenylethylene (APE) di-telechelic polyisobutylenes is described. Utilization of a difunctional cationic initiator and the in situ addition of the non-homopolymerizable APE lead to the formation of di-anthryl telechelic polyisobutylenes. Products were characterized by 1H NMR spectroscopy and Size Exclusion Chromatography. The polymers were UV irradiated at 365 and 254 nm and the reversible photocycloaddition of anthryl moieties was investigated. The chain extension of di-anthryl telechelic PIBs through photocoupling at 365 nm produced higher molecular weight products from low molecular weight precursors. The effect of precursor polymer concentration on the degree of chain extension was investigated, and intermolecular interactions leading to the formation of tetramers was observed. The photocoupled products were UV irradiated at 254 nm to induce the reversal of photocycloaddition of anthryl groups and to follow the consequent photoscission of polymers. |
topic |
Anthracene photochemistry reversible chain-extension polyisobutylene cationic polymerization |
url |
http://dx.doi.org/10.1080/15685551.2017.1382028 |
work_keys_str_mv |
AT cimenozguconal uvinducedreversiblechainextensionof12anthryl1phenylethylenefunctionalizedpolyisobutylene AT turgutnugay uvinducedreversiblechainextensionof12anthryl1phenylethylenefunctionalizedpolyisobutylene |
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1725026927221145600 |